Centrifuge



FIG. 1 is a top front perspective view of a centrifuge, showing my new design;

FIG. 2 is a front elevational view thereof, shown on an enlarged scale;

FIG. 3 is a left side elevational view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is an enlarged elevational view of the control display.

FIG. 6 is a rear elevational view thereof. 

The ornamental design for a centrifuge, as shown. 